Removal of selected chlorinated micropollutants by ozonation
-
Ján Derco
,
Mária Valičková
Abstract
Feasibility of ozone oxidation for the elimination of selected dissolved organic micropollutants from water and wastewaters was studied. Five organochlorine pesticides, i.e. hexachlorobutadiene, pentachlorobenzene, hexachlorobenzene, lindane, and heptachlor, were used as organic contaminants of model water. The first four of them are classified as priority hazardous substances. The oxidation treatment process was performed in a jet loop reactor. Ozone was prepared from pure oxygen. Quantification of the organochlorine pesticides in water was achieved by the gas chromatographic method after liquid-liquid extraction. Significant contribution of stripping to the removal of the investigated compounds during the ozonation treatment was also proven by the results. Effective ozonation time with regard to treatment efficiencies was 30 min, which corresponds to the ozone input of 317 mg per liter of active volume of the ozonation reactor. Single power law kinetic models were used to describe experimental data and kinetic parameters were estimated. The best fit of the experimental degradation data of all studied pollutants was obtained by the second order kinetic model. It can be concluded, based on the results obtained, that the applied ozonation process is a promising procedure for the removal of the investigated pesticides from aquatic environment.
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© 2013 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Fifty years of the Department of Chemical and Biochemical Engineering at the Slovak University of Technology in Bratislava — brief history of research
- Airlift reactor — membrane extraction hybrid system for aroma production
- CFD-based atmospheric dispersion modeling in real urban environments
- Catalytic gasification of pyrolytic oil from tire pyrolysis process
- Kinetics of thermal decomposition of aseptic packages
- Sulphur distribution in the products of waste tire pyrolysis
- Equilibrium and kinetics of protein binding on ion-exchange cellulose membranes with grafted polymer layer
- Modeling of equilibrium and kinetics of human polyclonal immunoglobulin G adsorption on a tentacle cation exchanger
- Design calculations of an extractor for aromatic and aliphatic hydrocarbons separation using ionic liquids
- Effect of viscosity of a liquid membrane containing oleyl alcohol on the pertraction of butyric acid
- Anaerobic treatment of rapeseed meal
- Anoxic granulated biomass and its storage
- Removal of selected chlorinated micropollutants by ozonation
- Degradation and toxicity changes in aqueous solutions of chloroacetic acids by Fenton-like treatment using zero-valent iron
Articles in the same Issue
- Fifty years of the Department of Chemical and Biochemical Engineering at the Slovak University of Technology in Bratislava — brief history of research
- Airlift reactor — membrane extraction hybrid system for aroma production
- CFD-based atmospheric dispersion modeling in real urban environments
- Catalytic gasification of pyrolytic oil from tire pyrolysis process
- Kinetics of thermal decomposition of aseptic packages
- Sulphur distribution in the products of waste tire pyrolysis
- Equilibrium and kinetics of protein binding on ion-exchange cellulose membranes with grafted polymer layer
- Modeling of equilibrium and kinetics of human polyclonal immunoglobulin G adsorption on a tentacle cation exchanger
- Design calculations of an extractor for aromatic and aliphatic hydrocarbons separation using ionic liquids
- Effect of viscosity of a liquid membrane containing oleyl alcohol on the pertraction of butyric acid
- Anaerobic treatment of rapeseed meal
- Anoxic granulated biomass and its storage
- Removal of selected chlorinated micropollutants by ozonation
- Degradation and toxicity changes in aqueous solutions of chloroacetic acids by Fenton-like treatment using zero-valent iron
